Machine for cutting skeleton soles



y 2, 9 F. G. HOOKE ET AL 1.719.511

MACHINE FOR CUTTING SKELETQN SOLES Filed July 29, 1925 *M AW- I J F F I fizz/K M 'INVENTORJ" Patented July 2, 1929.

UNITED STATES PATENT oFFIcE.

FRED G. HOOKE AND JAMES J. FLYN N, OF LOWELL, MASSACHUSETTS, ASSIGNORS OF ONE-FOURTH TO GARDNER W. PEARSON, OF LOWELL, MASSACHUSETTS.

MACHINE FOR CUTTING SKELETON SOLES.

' Application filed July 29,

In application for patent filed by Fred G. Hooke and James J. Flynn on shoe filed June 16, 1924:, Serial No. 720, 259, there is described a skeleton intermediate sole for shoes.

In this skeleton sole the forward and shank parts are cut out leaving a rim which should be of substantially the same width throughout, as far back as the heel, or it may extend around the heel if desired.

In making such skeleton soles it has previously been necessary to prepare separate cutting dies for each size and style, at a great expense.

With this present invention it is possible on the same machine to cut skeleton intermediate soles of any style and of any size, with great rapidity.

It is also possible at the same time, to form a groove at an equal distance from the inside edge of the sole. I

In the drawings, Fig. 1 is a side elevation showing a sole passing through our machine, part of the sole being in section.

Fig. 2 is a front elevation of our machine, the protecting plate for the gears being removed.

Fig. 3 is a view from the top looking down, on the line 3-3, of Fig. 1. I

Fig. 4 is a plan View of one form of skeleton sole of our construction.

Fig. 5 is a similar View of a slightly different type of sole.

Fig. 6 is a detail showing how we may form a groove at the same time the skeleton sole is cut out.

Fig. 7 is a view similar to Fig. 1, of a modi-- lied form of machine.

In the drawings, in Fig. 4, we show a skel eton sole A having the heel part 10, the toe part 11, and the shank part 12. This has been cut out along the line 13, which except at the heel, is substantially equi-distant from the outer edge of the sole, but is cut across squarely at 14 to the point 15.

lVe do this by our machine, in which there is a main feed Wheel B, the periphery of which is preferably roughened or milled. and which is carried by a suitable drive shaft 25, driven by any suitable source of power.

As shown. this wheel is made up of the discs 21, 22 and 23, each of which preferably has its periphery roughened. Between discs 21 1925. 'Serial No. 46,746.

and 22 is the disc of less diameter, whereby an annular groove is formed. It is obvious that the main feed wheel B could be of one piece of metal if desired.

Also fixed to shaft 25 is the miter gear 24 which engages a miter gear 31 revoluble on a suitable shaft 32, and revoluble with the side guide wheel 30. These make up the edge guide C.

The stub shaft 32 is supported by an arm 35, and the shaft 25 revolves in suitable bearings 26, carried by the frame G of the machine.

lVe also provide a top guide foot F which extends down to within a point which is about the distance of the thickness of the sole A from the top of guide wheel B.

To also attach to the head I of the machine a. cutting knife D which extends down into the groove 20 of guide wheel B.

To start the knife D in a sole A, we find it convenient to attach it and top guide foot F to the head I of a. rocking lever H pivoted to frame G at 2 and at its other end 3 attached to red 4; which at its other end is connected to foot pedal 5 pivoted to the frame at 6. The

compression spring 7 between the end 3 and the frame at 8 tends to keep the point of knife D in groove 20.

To start a sole, pedal 5 is depressed thus lifting the knife and top guide so that the sole can be put in place. lVhen pedal 5 is released, spring 7 forces knife D through the material.

'In cutting outthe inside 18 of sole A, as shown by the dotted lines in Fig. 3, the knife 1) is started at the point 15 near the heel, and the sole A is fed forward and around, being pressed all the time against the side guide C, passing through the full .line position shown in Fig. 3, until the point 17 is reached. The sole is then removed and the sect-ion between 17 and 15 is cut out by any suitable knife.

If desired, as shown in Fig. 5, the sole L having the toe part 60, shank 62 and heel 63, may be cut all the way around as shown at 61.

As shown in Fig. 6, we may, in. order to form a groove 50, locate a groover 51 alongside kni fe D so that as sole A is fed along,

the groove is formed as the material is cut out.

It is obvious that the annular groove 20 could be omitted but in that case the point of the knife must just touch the periphery of the feed roll or else be positioned in front of the top guide F as shown in Fig. 7.

In Fig. 7 feed roll L is not positively driven but revolves freely on a shaft 70 and edge guide roll M not geared to it but revolves freely on shaft 71.

Shafts 70 and 71, as well as top guide L and knife D, are all fixed to the frame P of the machine. 7

Instead of raising and lowering the knife and top guide, the sole A is pulled along and down as shown by the dotted lines in Fig. 7 until the right position is reached, when it is lifted to the full line position, the knife and a grooving knife positioned so as to groove the strip severed from the sole.

. FRED G. 'HOOKE.

JAMES J. FL'YNN. 

